Type-writing machine



TYPE WRITING MACHINE.

No. 438,916. Patented Oct. 21, 1-890.

Fig-2 \A/IT/VEEEEE UNITED STATES PATENT OFFICE.

LEWIS T. FOSS AND THOMAS K. KEITH, OF BOSTON, MASSACHUSETTS.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent 1N0.- 438,916, datedOctober 21, 1890.

Application filed December 9, 1889. Serial No. 333,138. (No model.)'

To all whom it may concern.-

Be it known that we, LEWIS T. Foss and THOMAS K. KEITH, ,both of Boston,in the county of Suffolk and State of Massachusetts, have invented a newand useful Improvement in Type-Writers, of which the following, taken inconnection with the accompanying drawings, is a specification.

Our invention relates to type-writers, and more particularly to certainimprovements upon the type-writer shown and described in an applicationfiled by us February 11, 1889, Sggial No. 299,425, and allowed November20, 1 9.

Our invention-consists of a curved directing-rod, (with a portion nearits upper end straight,) a tongue pivoted to its upper end for securingthe same to an upper horizontal shelf in the frame, and a slotted tubeor sleeve, its upper end type-tipped, so arranged in connection with anelastic spiral plunger as both to work reciprocally outside the curveddirecting-rod, and also that said slotted sleeve may so work throughsaid upper horizontal shelf.

The object of our invention is to provide a durable, reliable, and cheaptype-writing machine.

Our invention consists of various improvements, alterations, andadditions to our previous invention, as shown in the accompanyin gdrawings, and hereinafter described.

Figure 1 shows a central section side View of our improved type-writer.Fig. 2 shows a front view of the upper shelf of the frame, type-tippedsleeves, plunger, directing-funnel, ink-ribbon, and feed-roller. Fig. 3shows an enlarged central vertical section of directing-rod and tonguesecured to the upper shelf, elastic plunger, slotted sleeve, and type.Fig. 4 shows a plan view of top of directing-rod and tongue secured toupper shelf by a screw, also slotted sleeve, all as seen looking downupon the upper shelf.

Corresponding letters in the several figures of the drawings designatelike parts, referring to which A is the vertical frame-work of themachine.

B is the bed-plate, supporting the whole superstructure.

O is the lower shelf, to which the lower ends of the directing-rods aresecured and through which the connecting-rods H Work, and D is the uppershelf, to which the upper ends of the directing-rods are secured bymeans of tongues, and through which the slotted sleeve G Works.

E is the directing-rod, secured at its lower end to the lower shelf 0,and at its upper end by means of a tongue to the upper shelf D.

F is an elastic plunger, made of close wound piano-wire, or othersuitable material, and works freely upon the directing-rod E.

G is a slotted sleeve, which works upon or outside of the directing-rodE and through an opening in the upper shelf D. Its lower end is securedto the upper end of the elastic plunger F, and forms a continuation ofsaid plunger. The upper end of this sleeve is tipped with a type.

H is a connecting-rod, which connects the lever-bar I with the elasticplunger F. This connecting-rod works vertically through a hole oropening in the lower shelf O.

I is the lever-bar, which connects the connecting-rod H with the key.

J is the key.

K is the type.

L is the directing-funnel, intended to correct slight inaccuracies inthe upward passage of the type-tipped sleeve G.

M is the feed-roller.

N is the ink-ribbon.

O is the tongue, which is pivoted to the upper end of the directing-rod.This tongue is countersunk in the upper shelf D, and secured by a screw.

P is the screw which secures the tongue 0 to the upper shelf D.

Q is the pivot-pin, which secures the tongue 0 to the directing-rod E.

R is the slot, which runs the entire length of the sleeve G, and is somade as to enable the sleeve G to work easily through the upper shelf Dwithout interference of the tongue 0.

S represents vertical posts secured to the bed-plate B for the purposeof directing the lever-bars I vertically.

In Fig. l of the drawings one of the plungers F is represented as raisedby pressure on the key J, the sleeve G as having passed nearly itsentire length through the upper shelf D, and the type K pressed againstthe ink-ribbon N, as it appears when printing a character.

The machine in the drawings is represented, for the purpose ofsimplicity, with but few plungers.

The method of operating our improved type-Writer may be explainedbriefly as follows: Place the paper to be written upon on thefeed-roller M so that it passes between said roller and the ink-ribbonN. Press downward the key J, representing the character or letterdesired, with the finger. This pressure raises the opposite end of thelever-bar I, and with it the connecting-rod H, the elastic plunger F,the slotted sleeve G, and type K. The elastic plunger and slotted sleeveslide upon the directing-rod E, which is stationary, and the slottedsleeve passes through the upper shelf 1) clear of the directing-rod. Inits upward passage the sleeve is not impeded by the tongue 0, on accountof the slot R, which is wide enough to easily receive the tongue 0. Vhenthe pressure is taken from the key, the lever and plunger return totheir former position. The slotted sleeves G pass through the uppershelf D at such angles as all to strike the ink-ribbon N at the samepoint, and the tongues 0, working in the slots of the sleeves G, preventthe types turning,

and thereby secure perfect angles.

By using a directing-rod in place of a directing-tube, as set forth inour former application, the machine can be constructed more cheaply, thefriction is less, and, in' connection with the slotted sleeve andtongue, is much less likely to get out of order.

Having thus described our invention, what we claim, and desire to secureby Letters Patent, is

1. The combination, in a typeavriting machine, of an elastic spiralplunger, a slotted sleeve, and type, and a curved clirecting-rod toguide the same, substantially as shown.

2. The combination, in a type-Writing machine, of an elastic spiralplunger, a slotted sleeve, and type, a cur ved directing-rod to guidethe same, and a funnel or guide, all substantially as shown anddescribed in the accol'npanying drawings and specification.

In testimony whereof we have signed our names to this specification, inthe presence of two subscribing Witnesses, on this 3d day of December,A.l). 1889.

LEWIS T. FOSS. THOMAS K. KEITH.

Witnesses:

CHAS. A. MAYNARD, CLAIBORNE W. KANE.

